package com.atguigu.gmall.realtime.app.dwm;

import com.alibaba.fastjson.JSON;
import com.atguigu.gmall.realtime.app.BaseAppV2;
import com.atguigu.gmall.realtime.bean.OrderWide;
import com.atguigu.gmall.realtime.bean.PaymentInfo;
import com.atguigu.gmall.realtime.bean.PaymentWide;
import com.atguigu.gmall.realtime.common.Constant;
import com.atguigu.gmall.realtime.util.AtguiguUtil;
import com.atguigu.gmall.realtime.util.FlinkSinkUtil;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.co.ProcessJoinFunction;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.util.Collector;

import java.time.Duration;
import java.util.HashMap;

import static com.atguigu.gmall.realtime.common.Constant.TOPIC_DWD_PAYMENT_INFO;
import static com.atguigu.gmall.realtime.common.Constant.TOPIC_DWM_ORDER_WIDE;

/**
 * @Author lizhenchao@atguigu.cn
 * @Date 2021/11/1 9:07
 */
public class DwmPaymentWideApp extends BaseAppV2 {
    public static void main(String[] args) {
        new DwmPaymentWideApp().init(3004, 1, "DwmPaymentWideApp", "DwmPaymentWideApp",
                                     TOPIC_DWD_PAYMENT_INFO, TOPIC_DWM_ORDER_WIDE);
    }
    
    @Override
    
    public void run(StreamExecutionEnvironment env,
                    HashMap<String, DataStreamSource<String>> topicAndStreamMap) {
        KeyedStream<PaymentInfo, Long> paymentInfoStream = topicAndStreamMap
            .get(TOPIC_DWD_PAYMENT_INFO)
            .map(info -> JSON.parseObject(info, PaymentInfo.class))
            .assignTimestampsAndWatermarks(
                WatermarkStrategy
                    .<PaymentInfo>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                    .withTimestampAssigner((info, ts) -> AtguiguUtil.toTs(info.getCreate_time()))
            )
            .keyBy(PaymentInfo::getOrder_id);
    
        KeyedStream<OrderWide, Long> orderWideStream = topicAndStreamMap
            .get(TOPIC_DWM_ORDER_WIDE)
            .map(wide -> JSON.parseObject(wide, OrderWide.class))
            .assignTimestampsAndWatermarks(
                WatermarkStrategy
                    .<OrderWide>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                    .withTimestampAssigner((wide, ts) -> AtguiguUtil.toTs(wide.getCreate_time()))
            )
            .keyBy(OrderWide::getOrder_id);
    
        paymentInfoStream
            .intervalJoin(orderWideStream)
            .between(Time.minutes(-45), Time.seconds(10))
            .process(new ProcessJoinFunction<PaymentInfo, OrderWide, PaymentWide>() {
                @Override
                public void processElement(PaymentInfo left,
                                           OrderWide right,
                                           Context ctx, Collector<PaymentWide> out) throws Exception {
                    out.collect(new PaymentWide(left, right));
                }
            })
            .map(JSON::toJSONString)
            .addSink(FlinkSinkUtil.getKafkaSink(Constant.TOPIC_DWM_PAYMENT_WIDE));
    }
}
